as in deceit
the tendency to tell lies
her memoirs have such an air of pervasive mendaciousness that she seems to have lost all sense of what truth is
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
Example Sentences
Recent Examples of Synonyms for mendaciousness
Noun
-
The shows tackle stories about murder, deceit, grief, familial estrangement, presidential assassinations, and complex mental health diagnoses — and all have found captive audiences on the streamer over the last year.—
Katie Campione,
Deadline,
28 May 2026 -
In each new place, Charlie pretends to be Layla, hoping to ensnare an unsuspecting Stanley into his web of deceit.—
Nicole Briese,
PEOPLE,
28 May 2026
Noun
-
Antisocial personality includes a persistent pattern of traits such as callousness, lack of concern, deceitfulness, and irresponsibility, Ryan said.—
Harriet Ramos,
Fort Worth Star-Telegram,
29 Apr. 2026
-
Perfidy — from the French perfidie via the Latin perfidia — means deceitfulness, treachery or a breach of faith or promise.—
Harmeet Kaur,
CNN Money,
21 Jan. 2026
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Cite this Entry
“Mendaciousness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/mendaciousness. Accessed 4 Jun. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
